Vtech LS6405 Additional Cordless Handset for LS6425 Series Answering SystemDECT 6.0 cordless accessory handset is for use with LS6425-3. Communicate instantly with any or all of the handsets within the system using Push-to-Talk intercom. Handsfree conversations at the touch of a button with the handset speakerphone. HD Audio provides fuller and clearer sound. Lines: 1; Telephone Type: Cordless; Caller ID/Type: Handset; Maximum Wireless Range: 800 ft.